Thai men are incredibly jealous of foreigners at the best of times, so when a well heeled, younger farang comes along and cleans up at the club then of course they are going to resent that.
I should know, I have been that guy on many occasions.
They are seething with envy and will stare you down like theres no tomorrow. They will try every sly tactic in the book to make you feel inferior, they will talk behind your back, sabotage you, call you names, spread rumors etc..
it’s the classic small willy syndrome playing out in front of your very eyes.
bob.